The 41-year-old actress, who has been with the 34-year-old actor since September 2011 when they costarred in the film The Place Beyond the Pines, has been flashing a stunning emerald and gold ring, leading to speculation that her leading man may have popped the question.

E! Newsreports that the actress appears to have begun wearing the bauble sometime in June, consistently on her right hand — so wrong hand for an engagement ring, unfortunately! — in both Instagram snaps and on the red carpet.

Even though it's likely not an engagement ring, E! News speculates that the ring may be a push present from Gosling to mark the birth of their first child together — the couple welcomed daughter Esmeralda Amada Gosling a year ago — especially seeing as Mendes' jewel and her daughter's name seem to be linked: Emerald... Esmeralda — cute, right?! A rep for Mendes declined to comment to E! News on questions about her private life.

The couple has been super tight lipped about their romance and new family, only revealing minor tidbits here and there. Mendes divulged on Instagram that Gosling's dog George is "so sweet with" their new baby girl. In March, Gosling told E! News of parenthood, "It's just an exciting time."